Hemera/Thinkstock(HAYWARD, Calif.) -- The parents of missing girl Michaela Joy Garecht are hoping that a three-inch bone fragment will finally solve the mystery of their daughter's 1988 disappearance.Sharon Murch, who has kept her daughter's memory ali...

Hemera/Thinkstock(HAYWARD, Calif.) -- The parents of missing girl Michaela Joy Garecht are hoping that a three-inch bone fragment will finally solve the mystery of their daughter's 1988 disappearance.Sharon Murch, who has kept her daughter's memory ali...